The Solution Chemistry of the Effect of the Dissolved Ions on the Flotation Process in Collophane-Dolomite System

Abstract:

The grain size of collophane and dolomite in phosphate ore is tiny, and the interaction of dissolved ions in solution and the re-adsorption of dissolved ions on mineral surface have a great influence on the flotation process. Because carbonate and phosphate have the similar surface properties, which have the larger concentration of the dissolved component in the pulp, and the dissolution, adsorption and equilibrium of mineral ions have a larger effect on the flotation process. In this experiment, cellophane-dolomite system was used as the research object, the solution chemistry of the effect of mineral dissolved ions on the flotation process was discussed. The test results show that under the open system, the pH of pulp increases and maintains at between 9.64~9.73 in dolomite natural dissolution process. While in collophane natural dissolution process, the pH increases and maintains at between 8.94~9.06, and the buffer capacity of collophane is weaker than dolomite. In the alkaline range, as the major dissolved ions of mineral coexistence system, CO₃^2- and PO₄^3- affect the conversion and separation between minerals.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1674-1678
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1674
• Online since: January 2014
• Authors: Zhi Hui Shen, Xiao Tai He, Qin Zhang*, Xiao Fen Huang
• Keywords: Cellophane-Dolomite System, Dissolved Ions, Flotation, Solution Chemistry

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